def __init__(self,
inplanes,
planes,
base_width=64,
stride=1,
dilation=1,
norm='bn',
conv='normal',
context='none',
ctx_ratio=0.0625,
stride_3x3=False,
downsample=None):
super(BasicBlock, self).__init__()
if conv == 'normal':
conv_op = nn.Conv2d
elif conv == 'deform':
conv_op = ops.DeformConvPack
elif conv == 'deformv2':
conv_op = ops.ModulatedDeformConvPack
else:
raise ValueError(
'{} type conv operation is not supported.'.format(conv))
assert context in ['none', 'se', 'gcb']
width = int(planes * (base_width / 64.))
self.conv1 = conv_op(inplanes,
width,
kernel_size=3,
stride=stride,
dilation=dilation,
padding=dilation,
bias=False)
self.bn1 = make_norm(width, norm=norm, an_k=10 if planes < 256 else 20)
self.conv2 = conv_op(width,
width,
kernel_size=3,
stride=1,
dilation=dilation,
padding=dilation,
bias=False)
self.bn2 = make_norm(width, norm=norm, an_k=10 if planes < 256 else 20)
if context == 'none':
self.ctx = None
elif context == 'se':
self.ctx = ops.SeConv2d(width, int(width * ctx_ratio))
elif context == 'gcb':
self.ctx = ops.GlobalContextBlock(width, int(width * ctx_ratio))
else:
raise ValueError(
'{} type context operation is not supported.'.format(context))
self.relu = nn.ReLU(inplace=True)
self.downsample = downsample
def __init__(self,
inplanes,
planes,
base_width=64,
stride=1,
dilation=1,
norm='bn',
conv='normal',
context='none',
ctx_ratio=0.0625,
stride_3x3=False,
downsample=None):
super(Bottleneck, self).__init__()
if conv == 'normal':
conv_op = nn.Conv2d
elif conv == 'deform':
conv_op = ops.DeformConvPack
elif conv == 'deformv2':
conv_op = ops.ModulatedDeformConvPack
else:
raise ValueError(
'{} type conv operation is not supported.'.format(conv))
(str1x1, str3x3) = (1, stride) if stride_3x3 else (stride, 1)
width = int(planes * (base_width / 64.))
self.conv1 = nn.Conv2d(inplanes,
width,
kernel_size=1,
stride=str1x1,
bias=False)
self.bn1 = make_norm(width, norm=norm.split('_')[-1])
self.conv2 = conv_op(width,
width,
kernel_size=3,
stride=str3x3,
dilation=dilation,
padding=dilation,
bias=False)
self.bn2 = make_norm(width, norm=norm, an_k=10 if planes < 256 else 20)
self.conv3 = nn.Conv2d(width,
planes * self.expansion,
kernel_size=1,
bias=False)
self.bn3 = make_norm(planes * self.expansion, norm=norm.split('_')[-1])
if context == 'none':
self.ctx = None
elif context == 'se':
self.ctx = ops.SeConv2d(planes * self.expansion,
int(planes * self.expansion * ctx_ratio))
elif context == 'gcb':
self.ctx = ops.GlobalContextBlock(
planes * self.expansion,
int(planes * self.expansion * ctx_ratio))
elif context == 'nonlocal':
self.ctx = ops.NonLocal2d(planes * self.expansion,
int(planes * self.expansion * ctx_ratio),
planes * self.expansion,
use_gn=True)
elif context == 'msa':
self.ctx = ops.MS_NonLocal2d(planes * self.expansion,
int(planes * self.expansion *
ctx_ratio),
planes * self.expansion,
use_gn=True)
else:
raise ValueError(
'{} type context operation is not supported.'.format(context))
self.relu = nn.ReLU(inplace=True)
self.downsample = downsample
def __init__(self,
inplanes,
planes,
base_width,
cardinality,
stride=1,
dilation=1,
norm='bn',
conv='normal',
context='none',
ctx_ratio=0.0625,
downsample=None):
""" Constructor
Args:
inplanes: input channel dimensionality
planes: output channel dimensionality
base_width: base width.
cardinality: num of convolution groups.
stride: conv stride. Replaces pooling layer.
"""
super(Bottleneck, self).__init__()
D = int(math.floor(planes * (base_width / 64.0)))
C = cardinality
if conv == 'normal':
conv_op = nn.Conv2d
elif conv == 'deform':
conv_op = ops.DeformConvPack
elif conv == 'deformv2':
conv_op = ops.ModulatedDeformConvPack
else:
raise ValueError(
'{} type conv operation is not supported.'.format(conv))
self.conv1 = nn.Conv2d(inplanes,
D * C,
kernel_size=1,
stride=1,
padding=0,
bias=False)
self.bn1 = make_norm(D * C, norm=norm)
self.conv2 = conv_op(D * C,
D * C,
kernel_size=3,
stride=stride,
dilation=dilation,
padding=dilation,
groups=C,
bias=False)
self.bn2 = make_norm(D * C, norm=norm)
self.conv3 = nn.Conv2d(D * C,
planes * 4,
kernel_size=1,
stride=1,
padding=0,
bias=False)
self.bn3 = make_norm(planes * 4, norm=norm)
if context == 'none':
self.ctx = None
elif context == 'se':
self.ctx = ops.SeConv2d(planes * 4, int(planes * 4 * ctx_ratio))
elif context == 'gcb':
self.ctx = ops.GlobalContextBlock(planes * 4,
int(planes * 4 * ctx_ratio))
else:
raise ValueError(
'{} type context operation is not supported.'.format(context))
self.relu = nn.ReLU(inplace=True)
self.downsample = downsample